<?php
/**
 * Title
 * Created by Jason.
 * User: Administrator
 * Date: 2019/12/7 0007
 * Time: 下午 5:13
 */

namespace app\index\service;


use app\index\interfaces\Observer;

class Observer2 implements Observer
{
    public function sendMsg()
    {
        // TODO: Implement update() method.
        echo '通知备货~';
    }

}